On What Matters

On What Matters is a major work in moral philosophy. It is the long-awaited follow-up to Derek Parfit''s 1984 book Reasons and Persons, one of the landmarks of twentieth-century philosophy. In this first volume Parfit presents a powerful new treatment of reasons and rationality, and a critical examination of three systematic moral theories — Kant''s ethics, contractualism, and consequentialism — ...